diff --git a/w4/Triangle.java b/w4/Triangle.java
new file mode 100644
index 0000000..4e1e064
--- /dev/null
+++ b/w4/Triangle.java
@@ -0,0 +1,17 @@
+public class Triangle extends Shape {
+    private double base;
+    private double height;
+
+    public Triangle(double base, double height) {
+        this.base = base;
+        this.height = height;
+    }
+
+    public double getBase()       { return base; }
+    public double getTriHeight()  { return height; }
+
+    @Override
+    public double getArea() {
+        return 0.5 * base * height;
+    }
+}